* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  font: 16px/1.5 "Microsoft Yahei", "Hiragino Sans GB", "Heiti SC", "WenQuanYi Micro Hei", sans-serif;
  color: #333;
}

img {
  width: 100%;
  height: 100%;
  vertical-align: middle;
}

a {
  text-decoration: none;
}